Jar-closure.



J. L. ROLLINS.

JAR CLOSURE.

APPLIGATION FILED NOV. 1B, 1913.

Patented Jan. 5, 1915.

JNVENTOR I f/ I "HE NORRls PETERS CO.. PH07C-k!THO.. WASHINGTON. D. C

JARROT L. ROLLINS, 0F COLFAX, CALIFORNIA.

JAaoLosURn.

Specification of Letters Patent.

Patented Jan. 5, 1915.

Application filed November 18, 1913. Serial No. 801,616.

I '0 all whom it may concern:

Be it known that I, J ARROT L. RoLmNs, a citizen of the United States, residing at Colfax, in the county of Placer and State of .alifornia, have invented new and useful Improvements in J ar-Closures, of which the following is a specification.

This invention relates to jar closures.

The object of the present invention is to provide a practicable, inexpensive, readily applied and efficacious closure for preserve jars and other containers.

The present invention consists in providing a jar and a removable cap therefor seatable upon the rim of the jar, said cap and said rim having a coincident conical exterior surface depressing upwardly from the top of the jar and a ring impregnated or coated with a substance which will make a hermetically tight seal when forced downwardly upon the coinciding conical periphcries of the jar neck and said cap.

The invention further consists in providing a jar with a rim or neck portion and a cap adjustable upon said portion, said cap and rim portion having substantially coinciding exterior surfaces and with a sealing ring or band of such material, or so treated, as to make a hermetically tight seal at the circumferential line of joint or contact of the cap upon the neck upon the jar.

Having reference to the accompanying drawings Figure 1 is a central Vertical section through a jar, showing the cap applied and hermetically sealed thereon by the sealing band. Fig. 2 shows a step in the process of forming the sealing ring.

2 represents a ar having a suitable neck 3 which is shown in the present instance as provided with a tapering exterior surface 4: of suitable length. After the ar 2 is filled with the substance to be preserved, a suitable cap 5 is adjustable upon the rim of the neck 3. The circumferential edge of the cap 5 is made of conical contour 6 coinciding with the angle of the conical neck surface 4: of the jar 2. While it is stated that the exterior surfaces 46 of the jar neck 3 and the cap 5 may be conical, it is understood that they may be of other suitable contour.

The hermetic sealing of the cap upon the neck 3 of the jar is accomplished by providing an annulus or sealing ring 7, which ring 7 may be formed of, or saturated or otherwise treated, With a substance having the property of making a Water and airtight joint, at its inner surface, with the coincident surfaces and 6 of the jar and cap. The annulus or ring 7 is preferably of some material which may be readily slit from edge to edge when it is desired to break the seal and release the cap 5. Such material may be, for instance, thin metal, hard rubber, leather, paper, or a fibrous composition which will be at once readily separable and form a substantial hermetic seal for the neck and cap 5 of the jar.

One type of annulus or seal 7 is shown as comprising in Fig. 2 a short cylindrical ring which may be manufactured in any suitable manner, as for instance, by drawing a tape through a molten mass of seal-forming material 10, which may be composed of paraffin, and rosin fusible at a temperature of about 212 F. which will form a coated ring. The rings 7, in Whatever form they may be manufactured, are pressed upona suitable former 8, here shown as comprising a conical member which shapes the inner surface of the seal ring 7 to conform closely to the tapering contour of the surfaces 4:6 of the jar and cap. When the sealing ring 7 is forced downwardly over the coinciding exterior surface 4.-6 of the jar and closure it will make an effective, simple, inexpensive, practicable joint and one which may be broken or easily opened without the application of a turning force of considerable degree, as in the case when screw caps are used, and does not require the application of any tools for prying or lifting the edge of the closure. Because of the simplicity and cheapness of the sealing ring 7 the operator may, if desirable, slit the ring from edge to edge, thus breaking the bond and leaving the cap 5 ready to be lifted off. Preferably the seal member is placed upon the jar and closure while the jar is sufficiently heated to effect a fusing of the sealing substance of the ring, thus utilizing the heat of the material being preserved to effect the seal. The shaped ring is removed from the former 8 by an ejector 9 movable thereon.

Having thus described my invention, what I claim and desire to secure by Letters Patent is In combination with a jar and a cap on the neck thereof, said jar and cap having peripheries which coincide and combine to form a conical surface which is of least diameter at its top, a ring having a conical inner circumference which is of least diameter at its upper end so as to conformably In testimony whereof I have hereunto set engage over the exterior of said conicalsurmy hand in the presence of two subscribing face and be wedged into engagement therewitnesses.

with, said ring having a fusible inner cir- JARROT L. ROLLINS. cumference whereby to automatically seal Witnesses:

the circumference of the joint between the IRVINE SINNETT,

cap and jar neck by the heat of the jar. W. W. HEALEY.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.- Washington, D. G. 

